Tomcat 3.2.1, IIS 5 and AJPv12

[de...@bt.com]

I am currently running the above for my servlet application.
(tomcat 3.2.1, IIS 5 and AJPv12)

Cant get more than 250 syncronous users with this setup!! Is 250 users to
much for this system. What can i improve to get more than this!!!!

My problem is that I am getting a "page not found error"(405.htm i think)
when I push the number of simultaneous threads up to 250. I can set my
server up to a limit on 200 threads (get 403-9.htm) and dont get the
previous error page.

When I look in my ISAPI.log file fore errors, i get this:
jk_ajp12_worker.c : ajpv12_handle_response, error writing back to server
jk_isapi_plugin.c : jk_ws_service_t::write, writeclient failed

(basically lots of these ajp12 worker and isapi plugin error messages)
No other errors noted, except instead of JSP page, I get a default error
page as mentioned previously.

I am running a default connection pool through my tomcat configuration!!
What is likely to be the problem!!

Is 250 threads to hardcore for this setup!
Is it my memory or server (dual-700 x86 nt)
Has anybody had this setup over 250 threads??

Any ideas on how to test this further to find out where the bottleneck is, I
would most apprechiate.

Derrick D Robertson
BTexact Technologies
Business Solutions Research Lab
Communications rep for Business Systems Research Lab
http://technology.intra.bt.com/enterprise-research/labs/bus-sys%20lab.htm
e-mail:  derrick.robertson@bt.com
tel:     (+44)(0)1473 606521
mob:     (+44)(0)7718923254
MLBG pp13, Adastral Park, Martlesham, Ipswich IP5 3RE

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-----Original Message-----
From: Sven Koehler [mailto:skoehler@upb.de]
Sent: Wednesday, February 05, 2003 11:52 AM
To: tomcat-user@jakarta.apache.org
Subject: Re: java processes after tomcat exits


> Are you on Linux? Do you have LD_KERNEL_ASSUME=2.2.5 set?

Do i need this for JDK1.4?
i thought it's only needed for JDK1.3



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